A simple calculation of the Hasse-Witt matrix is used to give examples of curves which are Kummer coverings of the projective line and which have easily determined p-rank. A family of curve carrying non-classical vector bundles of rank 2 is also given.
Sulla base di un calcolo semplice si danno esempi di curve con proprietà legate al rango della matrice di Hasse-Witt.
@article{RLINA_1988_8_82_3_405_0, author = {Francis J. Sullivan}, title = {Hasse-Witt matrices and Kummer extension}, journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti}, volume = {82}, year = {1988}, pages = {405-411}, zbl = {0739.14014}, mrnumber = {1151691}, language = {en}, url = {http://dml.mathdoc.fr/item/RLINA_1988_8_82_3_405_0} }
Sullivan, Francis J. Hasse-Witt matrices and Kummer extension. Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti, Tome 82 (1988) pp. 405-411. http://gdmltest.u-ga.fr/item/RLINA_1988_8_82_3_405_0/
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